View Compilation Error

0_0_21436984_3848.cpp: In function 'int main()':
0_0_21436984_3848.cpp:52:28: error: ISO C++ forbids applying 'sizeof' to an expression of function type [-fpermissive]
   memset(next,0,sizeof(next));
                            ^
0_0_21436984_3848.cpp:52:29: error: cannot resolve overloaded function 'next' based on conversion to type 'void*'
   memset(next,0,sizeof(next));
                             ^